User Documentation
User Manual Managed Switches 
97 
Network without multicast filtering 
All hosts receive the multicast traffic, even if they don’t need it. 
Network with multicast filtering 
Hosts only receive dedicated traffic from other hosts belonging to the same group. 
The Weidmüller switch has three ways to achieve multicast filtering: IGMP (Internet Group 
Management Protocol) Snooping, GMRP (GARP Multicast Registration Protocol), and adding a 
static multicast MAC manually to filter multicast traffic automatically. 
IGMP (Internet Group Management Protocol) 










